Coaster and brake device.



A. P. MORROW. OOASTER AND BRAKE DEVICE. APPLIOATION FILED APR.5, 1902.

93 1 ,7 87. Patented Au 24. 1909.

2 SHEETS-SHEET 1.

r k 5 W rm A. P. MORROW. COASTER AND BRAKE DEVICE. APPLICATION FILED APR.5,1902.

Patented Aug. 24. 1909.

2 SHEETS-SHEET 2.

. INVENTDR VITNESSEE UNITED STATES PATENT; OF

mxnmnn r. Ionnow, Emma, nnw ronx. consrnn AND memes. v

i 931,787, i i i Specification-oi Itetters QatentJ Aug. 24, 1909.

" Application ane A rus, 902. Serial m 101,533.

Q is; held upon the block G bya nut Be it known that I, ALEXANDER P. Mon- '(notshown') which is screwed up'onthis end now, a citizen of the United States, and resi- 'o'f. theaxle, or ,may be the same nut that dent'of Elmira, in the county of Ghemung fastens the axle to the'bicycleframe. 60 and State of New York, have invented cer- "A -sleeve 'J. upon the axle A between the tain new and useful Improvements 'in block Grand the sleeve B, has a conical suralrwfiom t t ma concern. 7

" Coaster-and Brake Devices, of whichthe face 7' 'and'fitting upon this sleeve there is following is a specification.

, an internally conical'sleeve K, styled the This invention relates to coaster and retarden Aspring 7:, which.may ress 65 10 brake devices and has for its objecttofp'roa ains'tthehlock G, tends to force: the s eeve vide an eflicient device of simple construcupon the sleeve J. The sleeve J is held tion. stationary between the block G and the I It c n ists in devices hereinafter de shoulder d on the axle A. Ears 76' projectscribediandfclaimed. ing from the retarder K are adapted to '70 I In"-the 'drawings;-Figure 1 is 'a longien-ter slots 0' in the end of the internal line 44' 0 end of the device. 7

tudinal section 0 fthe device'; Fig. 2 is an threaded sleeve 'C.

elevation parts beingbroken away to"show- The brake is the continuous cylindrical internal'Fconstruction; Fig. 3, shows the shell L (shown in Fig. 1). It is slotted brake shell' Fig. 4 is a cross sectionon the from each end alternatelyas by the slots v Fig. 1; Fig. 5 is-a cross section Z, l,'an'd l, Z; In the form shown, there are on the line 55 of Fig.1; Fig.6 is a cross two diametrically opposite slots extending section on the line 6-6 of Fig. 1; Figs. 7 from the. right hand end of the. shell (see and 8 are parts of the mechanism herein-' Fig. 3) tonear the other end thereof, and after to be explained; and Fig. 9shows one ,two other diametrically opposite slots ex- .M' "tending from the left hand end of the shell 'A' represents the axle which is secured in to near the right hand end thereof; the slots the rear forks of a bicycle'in the usual 'manbeing set at suitable distances apart, say

@ ner: The axle has a collar 0', and a shoulder ninety degrees from each other. The slots at. Upon.,the said axle is revolubly mount-l are flared near their ends, as shown in Fi 30 ed a sleeve B having upon its exterior sur- 3. Withineach end of the brake shell,there face the spiral thread I; (see Fig. 8). The is a ringM andN respectively. These rings thread 6. upon this sleeve is adapted to mesh have wedges'M' and N. respectively, which with the internal thread'c upon the second are adapted to fit within the flared ends of sleeve C'(see Fig. 7). The end of the sleeve the slots Z and Z respectively. The ring M 35 B terminates in the conical head B, exis held within the brake shell by pins n,'

ternally. slotted longitudinally at B B whichr'li'e' Within the ends of the slot Z. and internally recessed to contain the collar The ring N is; rigidly secured to the inner or flange a on\the axle. The corresponding end of the block G, and is prevented from end of the sleeve 0 has a flange C (see Fig, being withdrawn from the brake shell L by 4 7), both sides of. which are serrated, as means of pins m which lie within the slots Z 45 hea shown in said Fig. 7. The sprocket wheel in the brake shell. Since the block- G is D is rigidly secured to the sleeve E, and the held against rotation by the arm H, as aforesaid sleeve carries two lugs e, e, which are said, which is secured to the frame of the biadapted to lie within the ooves B in the cycle, the brake shell L will 'also be held B upon the sleeve The sleeve E againstrotation by its connection with said carrying the said sprocket wheel is revolublock throu h the pins m and wedge-shaped bly supported upon ball bearings, which lie shoulders upon the ring N; and the ring in a raceformed between the said collar and M is also non-revoluble because of its cona nut F that is screwed upon the end 'of the nection aforesaid with the brake shell. But

g 50 axle. Upon the other end of the axle a the brake shell is movable longitudinally block G 1s mounted, and this block is held toward the left (in Fig. 1) with reference against revolutionby the arm H', one end of -to.the ringN, and the ring M is movable which ismortised into a socket in the end of lohgitudinally in the same direction, the

sai'd'block, in themanner indicated'in'Fig. pins m and a sliding into their respective 55 9', and the other end is secured to the frame slots when" the said 'parts are so' moved with of the bicycle, any suitablemanner. The reference to one another. When the brake Fig. 1, the wed es M each side alternately.-

is radial cylindrical radial shell is moved to the left, the wedges N are also forced u into the slots Z and expand the outer en of said shell, and when the ring M is moved to the left, the wedges M are forced into the slots Z and 'ner end of said shell. If pressure is a phed to the ring M to force it toward the eft in will not only spread the inner end 0 the shell, but will also force said shell upon the wedges N so that the left hand end of said shell will be expanded by said wedges N, and its contractile power when the parts are released forces the wedges outward and returns them to place while the shell contracts away from the hub. By forcing wedges into the shell at two} three or more points on the circumference 0 the shell, it is caused to ex and so that its entire circumference will belirought into engagement with the hub, and this result is best attained by entering the wedges from It has been found in practice that four wedges, two on each side, are eflicient, when arranged as shown in the drawings, at equal distances apart and en.- tering the slots in the shell from each side alternately.

The hub X is revoluble u on ball bearings located at each end of the ub in race-ways formed res ectively between the sleeve E and said hu block G and the hub on the left. Upon the inside of the hub at the right, there is a rin Y which is positively connected to the hu by means of ears 3 upon said ring which enter longitudinal grooves a; in the hub, or by other means, so that the ring is non-rotary. with reference to the hub but can have some longitudinal movement therein. The ring has a surfacejfitting head B of the sleeve B. In the example of this invention herein shown, the ring Y has an internal conical surface fitting a conical abutment on the head B. There are teeth on the left hand face of this ring Y that are adapted to engage the teeth 0 on the right hand face of the flange C of the sleeve C. The loose movement of the ring Y permits adjustable en agement and quick disengagement of the sure on the ball bearings.

The right hand face of the ring M has radial lugs to engage the serrations 0 on the left hand face of the flange C of the sleeve C. The preferred form of this device pins c set in the end of M so as to project therefrom and utin s or serrations of curvatures adapted to t said pins. This form 'ves prompt and sufliciently powerful clutc ing and quick release; I

The sleeve C is, moved toward the right and the left to drive and brake respectively by engagement with the driving ring Y on one side or with the wedge operating ring the. rin

spread the ins rocket D on pedaling forward on the right, and between the an abutment on the IlVlDg clutch and avoids pres-' M on the other side. The sleeve C can take an intermediate position so as to be disengagled from both the driving ring and the we ge operating ring and the intermediate position is the coastin position of the parts.

The hub is driven orward by the power transmitted from the pedals to the rear when the s eeve C engages with thering Y, and the hub is retar e or braked on back pedaling by the expansion of the brake shell by the wedges upon the rings M and N. Theoperation of the several parts in accomplishing these results will now be described.

On forward pedaling, the sleeve E actuated by the sprocket wheel D turns the screw-threaded sleeve B clock-wise and moves the sleeve C toward the right, which causes the clutch teeth 0 to enga e with the corresponding teeth on the ring and stops any rotation of the sleeve G and forces the ring Y up upon head of the sleeve B, thus locking the sleeve B, the sleeve C and the head together for driving. If the hub is rotate and the the conical surface B of the sprocket wheel and sleeve F are stopped,

the fact that the sleeve B is also stopped by this operation, and the fact that the sleeve Y is enga ed with the hub and is rotated with it an is also clutched to the sleeve C will cause the sleeve G to move toward the left on the threads of the sleeve B and to become disengaged from the sleeve Y, thus permittin the hub to rotate freely although the sproc et wheel and its connected pai ts are stationary. The friction of the retarder ring K upon the cone J assists in causing this relative rotation of the sleeve C and its entire disengagfment from the ring Y. If the sprocket w eel is now rotated backward the retarder ring still having the same notion) the sleeve B will be rotated backward and the sleeve C will be forced toward theleft until the teeth 0 come in engagement with the ins 0 and therefore clutch the ring C to t e ring M so as to prevent the rotation of said sleeve 0. The backward rotation of the ring B forces the sleeve 0 farther toward the the ring M which presses the wedges M into the ends of the slots Z, and this pressure being transmitted through the brake shell L causes the wedges N to enter and expand the slots Z so that the shell is equally expanded at both ends against the interior of the hub A and the brakin friction occurs. As soon as the backwar pressure upon the sprocket wheel \ceasesthe spring action of the shell upon the wed es M and N forces said wed es out o the slots and relieves the braking action. On resuming the forward pedaling,"the sleeve C is again forced toward the right in Fig. 1 and the clutching action first mentione for forward driving takes place.

-shell against the open at the other end of sai This device has effective driving and free coasting combinations and an extremely powerful braking mechanism due to the arran ement of the parts and the very long bra e shell which makes contact with a very large surface on the hub. It is compact and designed so that the-hubis the usual form, and symmetrical.

What I claim is 1. In a brake mechanism, the combination of a revoluble hub having a braking surface; a driving member within' the hub; a nonrevoluble brake shell within the hub slotted longitudinally; wedge -n1eans adapted to enter a slot of said shell longitudinally and thereby to expand it against said braking surface; and mechanism cooperating with the driving member for driving said hub on forward rotation of said driving member, and for actuating said wedge means upon back pedaling.

2. In a brake mechanism, the combination of an axle; a revoluble hub upon the axle having a braking surface; a driving member within said hub; a nonrevoluble brake shell within the hub having one or more longitudinal slots opening at one end of said shell and one or more opening at the other end; wedges adapted to enter the respective slots lon itudinally and thereby to expand said shel against said braking surface on the hub; and mechanism cooperating with the driving member for driving said hub on forward rotation of said driving member, and for actuating said wedges on back pedaling. 4

3. In a brake mechanism, the combination of an axle; a revoluble hub upon the axle having a braking surface; a driving member within the hub; a nonrevoluble and longitudinally movable brake shell within said hub, having one or more open-ended longitudinal slots therein; a stationary block within the hub having/thereon one or more wedges adapted to enter the said one or more slots and thereby to expand said braking surface on said hub; interposed means between said driving member and said shell for moving said shell longitudinally; and means for actuating said interposed means by the driving member.

4. In a brake mechanism, the combination of an axle; a revoluble hub upon the axle having a braking surface; a driving member within the hub; a nonrevoluble but longitudinally movable brake shell within said hub having one or more longitudinal slots opening at one end of said shell, and one or more opening at the other end; a stationary block within the hub having thereon wedges adapted to enter respectively those slots that open at one of the ends of said shell; wedges adapted to enter respectivel the slots that d shell; sup orting means for said last mentioned w ges;

a braking and mechanism cooperating with the driving member, for driving said hub on forward rotation of said driving member, and for moving said supporting means longitudmally on back pedaling and thereby forcing said wedges into their respective slots, whereby said shell is expanded against the braking surface of the hub.

5. 'In a brake mechanism, the combination of an axle; a revoluble hub upon the axle having a braking surface; a driving member within said hub; a nonrevoluble but longitudinally movable brake shell Within said hub having one or more longitudinal slots opening at one end of said shell and one or more opening at the other end; a stationary block within the hub having wedges thereon adapted to enter the slots opening at one end of said shell; a nonrevoluble but longitudinally movable ring within the shell having wedges thereon adapted to enter the slots opening at the other end of said shell; and mechanism cooperating with the driving member for driving said hub on forward rotation of said driving member, and for moving said ring longitudinally on back pedaling and forcing the wedges into their respective slots whereby the shell is expagded against the braking surface of the hu 6. In a brake mechanism, the combination of an axle; a revoluble hub thereon having surface; a driving member within said hub; a nonrevolnble continuous brake shell Within said hub slotted longitudinally and part way from each end whereby it is expansible at both ends; means at each end of said shell for expanding it against the braking surface of the hub; and mechanism cooperating with the driving member for driving said hub on forward rotation of said driving member and on back pedaling for actuating said shell-expanding means.

7. In a brake mechanism, the combination of an axle; a revoluble hub upon said axle and having a braking surface; a stationary block at one end of said hub; a driving member within the hub; an expansible brake shell within said hub slotted longitudinally part way of its length and concentric therewith, supported at one end upon the said stationary block and at the other end sur-' rounding said driving member; and shell expanding means located within said shell coiiperating with the driving member on back pedaling whereby on back pedaling said shell is expanded against said braking surface.

8. In a brake mechanism, the combination of a revoluble hub having a braking surface; a stationary block at one end of said hub; a driving member within said hub; a longitudinally slotted brake shell at one end surrounding said driving member, and at the other end supported by said block; wedge means on said block and adapted enter a slot of said shell longitudinally to expand the same; and mechanism cooperating wlth the driving member for driving said hub on forward rotation of said and for actuating said wedge means on back pedaling. I

9. In a brake mechanism, the combination of an axle; -a revoluble hub thereon; a stationary block at one end of said hub; a driving member within said hub; a brake shell at one-end surrounding said driving member and supported at its other end by said block, and having different longitudinal slots extending part way of its length and one or more opening at one end of the shell and one or more opening at the other end thereof wedges on the stationary block and adapted to enter the slots that are open at that end of the shell; nonrotative wedges adapted to enter the slots that open at the other end of said shell; and mechanism located in said hub cooperating with the driving member on back pedaling for forcing said wedges into said slots, whereby said shell is expanded against the braking surface of said hub, and for driving said hub on forward rotation of said driving member.

10. In a brake mechanism, the combination of an axle; a revoluble hub thereon; a stationary block at one end of said hub; a driving member within said hub; a brake shell at one end surrounding said driving member and supported at the other end by said block, and having different series of longitudinal slots extending part way of its length and opening alternately at each end of the shell; wedges on the block adapted to enter the slots that are open at that end of the shell; nonrotative wedges adapted to enter the slots that open at the other end of said shell; and mechanism located in said hub cooperating with the driving member on back pedaling for forcin said wedges into said slots, whereby said s 1ell is expanded against the braking surface of said hub,

operating with the and for driving said hub on forward rotation of said driving member.

11; In a brake mechanism, the combination of a revoluble hub having a braking surface; a driving member within the hub p a brake shell L having the longitudinal slots Z, l; the stationary block G; the wedges N secured to said block; the wedges M means connecting said shell and said wedges and permitting their longitudinal movement withreference to each other; and mechanism codriving member on back pedaling for forcing said wedges into their respectiverslots and expanding the said shell against said braking surface.

12. In a driving and brake mechanism, the combination of a revoluble hub having a brakin surface; a driving member; a nonrevolu le longitudinally slotted brake shell driving member within the hub; wedge means ada ted to enter a slot in said shell longitudina ly, and thereby to expand it against said braking surface; and means actuated by said driving member to drive said hub onforward rotation of said driving member, and to operate said wedge means on backward rotation thereof.

13. In a back pedaling brake and coaster mechanism, the combination of an axle;va revoluble hub thereon; a driving wheel capable of rotation in two directions; a driving member turned by said driving wheel; a brake mechanism; a driven member for actuating the brake mechanism and rotated by said driving member; a hollow cone rotated by said driven member; a nonrotary cone within the hollow cone; and means for maintaining frictional engagement between the two cones.

14:. In a back pedaling brake and coaster mechanism, the combination of an axle; a revoluble hub thereon; a driving wheel; an externally threaded sleeve; an internally threaded sleeve for connecting the internally threaded sleeve with thehub for forward driving; means for connecting said externally threaded sleeve with the. driving wheel; a nonrotary sleeve; a retarder; a loose connection between said retarder and said internally threaded sleeve whereby said retarder is movable longitudinally; a spring for pressing the retarder against the. nonrotary sleeve; and a shoulder upon the inner surface of the hub adapted to engage with the shoulder upon the internally threaded sleeve on forward pedaling to drive-said hub, substantially as described.

15.- In a back pedaling brake and coaster mechanism, the combination of a revoluble hub; a driving member rotatable in both directions; a serrated part movable longitudinally by rotation of said driving member; a braking mechanism; and a nonrevoluble and longitudinally movable brake actuating mechanism actuated by said serrated part and having means for meshing with the serrations thereof.

16. In a back pedaling brake and coaster mechanism, the combination of a revoluble hub; a driving member rotatable in both directions; a serrated part movable longitudinally by rotation 0 said driving mechanism; a braking mechanism; a nonrevoluble and longitudinally movable brake actuating mechanism actuated by movement of sai serrated part in one direction and having means for meshing with the serrations thereof; and a driving clutch set by movement 0 said serrated part in the other directlon.

17 In a back'pedaling brake and coaster mechanism, the combination of a revoluble hub; a driving member rotatable in both d1 having a shoulder; means one direction nally by ma a said driving mechanism; the

member; a brake h a nonrevoluble and lo brake actuating mech serrated part and with the serrat'ons thereof and com ng tudina'll'y movable amsm actuated. by said having means for mes PI'IS a wedgemovable in said slot and expanding sa1d shell. i i 18. In a backepedaling brake and coaster combination of a revoluble hub; a driving member rotatable in both directions; a serrated artmov able longitudinally by rotation 0% said driving mechanism; a brake shell havin slot; a nonrevoluble an longitudinally movable brake actuating mechanism actuated by movement of sa1d and having'means for mes with the serrations thereof and comprlsmg a wedge movable in 'said slot for expanding said shell; and a ,dr ment of said serrated part in the other. direction. i

19. In a back pedaling brake and coasterv mechanisrz'n, the combination of a revoluble hub; a driving member rotatable in both directions and aving an abutment; a serrated s ell having a longitudinal slot; and

a longitudinal serrated part in iving clutch set by move part and said abutment;

20. In a back pedaling brake and coaster mechanism, the combination of a revoluble hub;a driving member rotatable in both directions and having a conical abutment; a serrated member positively connected to the hub and having a loose longitudinal movement therein and provided with a conical surface fitting said conical abutment; and a serrated part movable longitudinally by rohing station of said driving member and ada ted by said movement to cause meshing o the serrated parts and to force the conlcal surface of said serrated member upon said conical abutment.

ALEXANDER P. MORROW.

Witnesses:

' C. M. PERKINS,

F, BIssELL.

connected to the hub and 

